Update configuration link to use reStructuredText link format
Update configuration link to use reStructuredText link format

Hi,

Found another broken link while fiddling with settings to serialize some arrays, and reading the documentation :-)

Seems to work fine when using the reStructuredText syntax, instead of Markdown. At least in GitHub UI it is being displayed correctly.

Thanks
Bruno
schmittjoh/serializer,curzio-della-santa/serializer,mpoiriert/serializer